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122220010220 = 22571179363643
BaseRepresentation
bin111000111010011100…
…0010101101011101100
3102200110201111211000012
41301310320111223230
54000301310311340
6132051434552352
711554503642260
oct1616470255354
9380421454005
10122220010220
1147919011710
121b82b2986b8
13b6aa103999
145cb61120a0
1532a4d26565
hex1c74e15aec

122220010220 has 48 divisors (see below), whose sum is σ = 319994212608. Its totient is φ = 38094548160.

The previous prime is 122220010189. The next prime is 122220010259. The reversal of 122220010220 is 22010022221.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 122220010195 and 122220010204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39680282 + ... + 39683361.

It is an arithmetic number, because the mean of its divisors is an integer number (6666546096).

Almost surely, 2122220010220 is an apocalyptic number.

122220010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122220010220 is an abundant number, since it is smaller than the sum of its proper divisors (197774202388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122220010220 is a wasteful number, since it uses less digits than its factorization.

122220010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79363670 (or 79363668 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 122220010220 its reverse (22010022221), we get a palindrome (144230032441).

The spelling of 122220010220 in words is "one hundred twenty-two billion, two hundred twenty million, ten thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 11 14 20 22 28 35 44 55 70 77 110 140 154 220 308 385 770 1540 79363643 158727286 317454572 396818215 555545501 793636430 873000073 1111091002 1587272860 1746000146 2222182004 2777727505 3492000292 4365000365 5555455010 6111000511 8730000730 11110910020 12222001022 17460001460 24444002044 30555002555 61110005110 122220010220